Good luck, Frank.
Moving the router is not what I meant; I meant moving the control RRC to a different location and router to see
if the problem persist. If it does, then focus on the radio RRC's router as the cause. If it improves, focus on the
control location's router.
It is highly unlikely that a (non-managed) switch would cause this kind of problem, since they are relatively passive
devices and just pass the packets on. I have seen a couple go bad, but it is rare.
73,
Mitch DJ0QN / K7DX